Exiled billionaire was once one of the richest businessmen in Russia under Boris Yelstin. Regime change brought falling fortunes; left then Prime Minister Vladimir Putin's Russia in 2001 (Putin had been elected year prior). His holdings in oil and aluminum companies were sold to fellow billionaires Roman Abramovich and Oleg Deripaska. Berezovsky claims he was forced to sell and is suing Abramovich in a London court; last year, a London court finally agreed to look into Berezovsky's claims. Also in court fighting the widow of his friend and business partner Badri Patarkatsishvili for half the dead man's fortune. Continues to live in self-imposed exile in London, as Russian authorities demand his extradition on suspicion of large-scale fraud.